The Millers have signed the free agent on a one-year deal.
Rotherham are expected to sign two new defenders over the coming days.
There was beef in the dugouts before kick-off at Fleetwood.
Matty Done chose Rochdale instead of Rotherham.
Paul Warne wants two signings before the end of August but not the Coventry man
Darnell Fisher joined Preston on a three-year deal on Wednesday.
Darnell Fisher looks like leaving Rotherham.
The former club-record buy is trying to save his Millers career.
Warne will make use of the friendly with League Two opposition.
There might not be anymore additions, says the Millers boss.